Benchmark

Renders the same models with each build of OpenSCAD your browser can run: with threads on all cores, on one core, and the fallback that emulates exceptions. Each build is downloaded and started first, which isn't timed; then a small warm-up model, the struts, the Voronoi web, and the Voronoi web's script alone, without its geometry. It takes a minute or two.

The results go to this site with what your browser tells about your computer, as for the render records (see privacy), and appear in the table below for anyone who opens this page. No address, no cookie.

Recorded runs

Seconds of OpenSCAD's own work, with the time to start it (with its threads) apart. The commit is the site's version, the model the digest of the moss pole's file. All records as JSON

When (UTC)	Commit	Browser	System	Cores	Graphics	Build	Start	Warm-up	Struts	Voronoi	Voronoi script
2026-11-05 12:07	`2ed3e31`	safari 27.0.1	ios 18.7	4	Apple GPU	native	0.01	0.62	1.40	7.24	0.96
2026-11-05 12:07	`2ed3e31`	safari 27.0.1	ios 18.7	4	Apple GPU	compat	0.02	0.80	3.69	17.16	8.77
2026-11-05 12:07	`2ed3e31`	safari 27.0.1	ios 18.7	4	Apple GPU	threads	0.10	0.88	1.82	6.98	0.93
2026-11-05 12:03	`2ed3e31`	safari 26.6.1	macos 10.15.7	4	Apple GPU	native	0.01	0.87	1.69	8.12	1.02
2026-11-05 12:03	`2ed3e31`	safari 26.6.1	macos 10.15.7	4	Apple GPU	compat	0.01	1.07	4.76	20.66	11.12
2026-11-05 12:03	`2ed3e31`	safari 26.6.1	macos 10.15.7	4	Apple GPU	threads	0.06	1.11	2.09	7.41	1.10

Failures

What went wrong in visitors' browsers (ADR 66): failed renders with OpenSCAD's error, crashed workers, the threaded build failing to start, and renders that never finished. All of them as JSON, with OpenSCAD's last lines and the settings.

When (UTC)	Commit	What	Build	Browser	System	Error
2026-11-06 07:12	`8de222c`	model	threads	safari 26.6.1	ios 18.7	ERROR: Cross-origin script load denied by Cross-Origin Resource Sharing policy.
2026-11-05 10:40	`652fea3`	unfinished	threads	safari 26.6.1	ios 18.7	a draft render that never finished (closed or reloaded)
2026-11-05 10:36	`652fea3`	unfinished		safari 26.6.1	ios 18.7	a draft render that never finished (closed or reloaded)
2026-11-05 10:36	`652fea3`	unfinished	threads	safari 26.6.1	ios 18.7	a draft render that never finished (closed or reloaded)
2026-11-05 10:34	`652fea3`	unfinished		safari 26.6.1	ios 18.7	a draft render that never finished (closed or reloaded)
2026-11-05 10:33	`652fea3`	model	threads	safari 26.6.1	ios 18.7	ERROR: Load failed
2026-11-05 10:33	`652fea3`	draft	threads	safari 26.6.1	ios 18.7	ERROR: TypeError: Load failed
2026-11-05 09:24	`43e6a84`	unfinished	threads	safari 26.6.1	ios 18.7	a model render that never finished (crashed)
2026-11-05 08:53	`f9b8e2e`	unfinished	threads	safari 26.6.1	ios 18.7	a draft render that never finished (closed or reloaded)
2026-11-04 22:55	`b2707db`	unfinished	threads	safari 27.0	macos 10.15.7	a model render that never finished (crashed, closed or reloaded)